Flavius Josephus, Antiquities of the Jews
William Whiston, A.M., Ed.

[148] So Antiochus gave Jonathan leave to raise himself a numerous army out of Syria and Phoenicia and to make war against Demetrius's generals; whereupon he went in haste to the several cities which received him splendidly indeed, but put no forces into his hands. And when he was come from thence to Askelon, the inhabitants of Askelon came and brought him presents, and met him in a splendid manner. He exhorted them, and every one of the cities of Celesyria, to forsake Demetrius, and to join with Antiochus; and, in assisting him, to endeavor to punish Demetrius for what offenses he had been guilty of against themselves; and told them there were many reasons for that their procedure, if they had a mind so to do. And when he had persuaded those cities to promise their assistance to Antiochus, he came to Gaza, in order to induce them also to be friends to Antiochus; but he found the inhabitants of Gaza much more alienated from him than he expected, for they had shut their gates against him; and although they had deserted Demetrius, they had not resolved to join themselves to Antiochus. This provoked Jonathan to besiege them, and to harass their country; for as he set a part of his army round about Gaza itself, so with the rest he overran their land, and spoiled it, and burnt what was in it. When the of Gaza saw themselves in this state of affliction, and that no assistance came to them from Demetrius, that what distressed them was at hand, but what should profit them was still at a great distance, and it was uncertain whether it would come at all or not, they thought it would he prudent conduct to leave off any longer continuance with them, and to cultivate friendship with the other; so they sent to Jonathan, and professed they would be his friends, and afford him assistance: for such is the temper of men, that before they have had the trial of great afflictions, they do not understand what is for their advantage; but when they find themselves under such afflictions, they then change their minds, and what it had been better for them to have done before they had been at all damaged, they choose to do, but not till after they have suffered such damages. However, he made a league of friendship with them, and took from them hostages for their performance of it, and sent these hostages to Jerusalem, while he went himself over all the country, as far as Damascus.